Methods and devices for motion storage in geometric partitioning mode

EP4544774A4Pending Publication Date: 2026-06-24BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
Filing Date
2023-06-21
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Current video coding standards, such as VVC, face limitations in achieving superior coding efficiency for geometric partitioning mode (GPM) due to inefficiencies in motion vector storage and prediction, particularly in handling inter and intra predictions, which affect bit-rate savings and video quality.

Method used

The proposed method improves motion field storage in GPM by determining and storing motion vectors based on geometric partitions, using a combination of motion vectors from different partitions, and employing adaptive blending schemes to optimize motion vector storage and prediction, allowing for more efficient bitstream encoding and decoding.

Benefits of technology

This approach enhances coding efficiency by reducing the bit-rate required for motion information storage, improving video quality, and adapting to various video content types through dynamic blending area adjustments, thereby surpassing the limitations of existing GPM designs.

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Abstract

Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, a decoder obtains at least one motion vector of a first motion vector or a second motion vector, where a coding unit is geometrically partitioned into a first part of a geometric partition and a second part of the geometric partition for prediction in a geometric partitioning mode, and the first motion vector is from the first part and the second motion vector is from the second part. Additionally, the decoder may determine a value of a stored motion vector type based on a blending width, a motion index, and a part index. Furthermore, the decoder may store a motion vector in a corresponding motion field based on the value of the stored motion vector type and the first or second motion vector.
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